文章基本信息

标题：Influência da configurao de instalao dos trocadores de calor na operao de um secador assistido por bomba de calor
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作者：Rodrigo Aparecido Jordan ; Wellytton Darci Quequeto ; Anamari Viegas de Araujo Motomia 等
期刊名称：Research, Society and Development
电子版ISSN：2525-3409
出版年度：2021
卷号：10
期号：16
页码：1-14
DOI：10.33448/rsd-v10i16.23929
语种：Portuguese
出版社：Grupo de Pesquisa Metodologias em Ensino e Aprendizagem em Ciências
摘要：A prototype of a dryer with a small capacity heat pump was developed and assembled in the laboratory, for drying thermosensitive products, with a refrigeration system coupled to a thermally insulated chamber, fixed to a single structure. Two options for mounting the heat exchange system inside the drying chamber were tested. In the first option (configuration 1), a configuration with a single heat exchanger was used, which alternated the function of evaporator and condenser, in cooling and heating cycles, through the use of a four-way valve. In the second option (configuration 2), a configuration with two heat exchangers was used, where the air passed first through the evaporator and then through the condenser. The settings were evaluated according to the psychrometric operating conditions: temperature, relative humidity and equilibrium air humidity. Configuration 2 was more effective in conditioning the drying air, with more favorable psychrometric conditions, resulting in lower average equilibrium moisture values.
关键词：Low temperature;Hygroscopic balance;Psychrometrics.